Honestly it's a Great Game / Visual Novel. But as much as I want to say Support the Developer, I would avoid it like the Plaque. If you buy it here on itch.io the developer does NOT update it on itch.io. He takes your money and gives you the game yes. But if you want a more up to date version he makes you do a monthly sub on Patreon. So it's like 100% greedy ass Dev. So those people who have supported him on itch.io are getting fucked over cause he isn't updating on itch.io. If he would quit being a asshole and fucking people over. He should just shut down this page on itch.io regarding his game and focus on Patreon. But as the old saying goes he wants his cake and to eat it also. But he is to greedy he will keep it here thinking anyone who is stupid enough to see it on itch.io buy it and think they are getting updates when they aren't. So DON'T FEED the DEVELOPER here! Instead down vote this game and warn others.
Here's - Nr. 2.
The dev does update on itch, once the update is ready.
Read the Ch5 DevLog here:
"For those of you who prefer getting it here on Itch, Chapter 5 will be released the moment it's out of early-access/is a finished build."
Production has a lot of factors, so far every update had new locations, the writing is phenomenal, especially considering the path approaches for each character. That takes not only a lot of subtle writing, but also a lot of planning, and as paths diverge will take even longer than it currently does.
To paraphrase a german proverb: "Good things take their time."
Look at Projects such as Ripples, or what NiiChan and Caribdis are pushing out.
Eternum's last update took more than 6 months.
If u don't wanna wait that long that's fine, be angry about it. But don't throw a public hissyfit, tryna discourage sales. Jerk off, and let the anger subside.